... This recently reintroduced area of research at the Observatory continues a tradition established at the Observatory by E.J. Opik , focusing on problems involving the origin and evolution of comets , their dynamical transfer from the Oort cloud and other reservoirs into short-period orbits , the interrelationship between comets and asteroids (particularly objects in Earth-crossing ... The first concerns the origin and evolution of the Oort cloud in the Galaxy. ...

A problem, that can arise when moving from Fortran 77 to Fortran 90, is dependent on a usual deviation from the standard, and has to do especially with user programs. ... With many Fortran 77 implementations we wrote PROGRAM TEST REAL X WRITE(*,10) 10 FORMAT('Give X = ',$) READ(*,*) X WRITE(*,*) X END In Fortran 90 we use "non-advancing I/O" instead. ... In some old Fortran dialects the statement TYPE was used to write on a typewriter terminal and PRINT was used to write on the line printer. ...